1. Signal strength will be indicated in the Notifications bar. When you are within range of a cellular tower the indicator will show more bars, if you are not in range of a cellular tower you will have less bars/less signal strength.
   Note: To view the locations AT&T voice and data service can be used, see the AT&T Network coverage map.
   
2. The network type icon will be displayed in the notifications bar. From slowest to fastest they are, E, 3G, 4G, LTE.
   Note: Learn more about the AT&T network.
   
3. If Airplane mode is enabled the Airplane mode icon will be displayed in the notifications bar.
   
4. When connected to a Wi-Fi network the Wi-Fi icon will be displayed in the notifications bar. The numbers of signal bars corresponds to the strength of the Wi-Fi signal.